Transparent panel



H. GARNER ET AL TRANSPARENT PANEL Filed Oct. 5, 1922 Patented Nov. 11, 1924.

1 OFFICE.

TRANSPARENT PANEL.

Application filed October 3, 1922. Serial No. 592,1,71.

To all whom it may concern:

Be it known that we, HENRY GARNER and JAMES PARKER GARNER, both subjects of the King of Great Britain, and residents of 5 Avalon, Wake Green Road, Moseley, Birmingham, in the county of Warwick, Eng land, and 37 Forest Road, Moseley, aforesaid, respectively, have invented certain new and useful Improvements in Transparent Panels; and we do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to transparent panels and is intended primarily for sliding windows for use upon vehicles.

One object of the present invention is to provide an improved transparent panel which will be lighter in weight and which will be less likely to be broken than those at present in use.

A further object of the present invention is to provide a transparent panel which will have the necessary degree of transparency but which will be sufficiently stiff to with stand wind pressure without distortion.

A further object of the present invention is to provide a transparent panel which will be resilient, i. e. which will have suflicient flexibility to allow of it bending so that it can slide in curved guides but which will have sufiicient stiffness as will cause it automatically to regain a fiat formation when released from the curved guides.

A further object of the present invention is to provide an improved transparent panel which will be sufficiently still to enable it to be pushed along guides from one end without distortion.

A further object of the present invention 40 is to provide an improved transparent panel which will have a maximum degree of trans parency and light transmitting qualities.

It is proposed to construct our improved transparent panel by taking a sheet of comparatively flexible transparent material such as celluloid and to thicken the edges of the panel to obtain the necessary degree of resiliency or stifiness.

A further object of the present invention is to provide a construction of transparent panel which will allow of metal strips or channels to be used for imparting to the panel the necessary degree of stiffness but which will avoid danger of buckling due to the difference between the co-efiicient of expansion of metal and the material of which the main sheet is made.

Referring to the drawings Figure 1 is a side View of a panel constructed according to the present invention.

Figure 2 is a sectional end view thereof.

In the construction illustrated the invention is shown. applied to a sliding window in which the stiffening of the sliding edges is effected by securing thereto strips of colluloid 38 or material having substantially the same co-efiicient of expansion as the main panel 37 of the window.

The transverse edges of the window however, are stiffened by means of metal channels 33 which are secured to the main panel by rivets 34. which fit in holes in the channels and the main panel. In addition the channels 33 are secured to the main panel by rivets 35 which rivets however are free to move along slots 36 in the main panel. By employing this arrangement the cham nels are free to expand to a greater or less degree: than the main panel of the window under the influence of increases or decreases of temperature.

What we claim then is A transparent panel applicable as a sliding window comprising a sheet of transparent celluloid, channel shaped stiffening members of metal engaging over two opposite edges thereof and extending to theends of said edges, a single rivet securing said channels to said sheet, a pin fixed in and passing from side to side of each of said channels, the ends of said pins being flush with the exterior of the channels, said pins passing through slots in the said sheet, said slots bein parallel to the adjacent edge of the sheet, and separate celluloid stiffening strips secured to the other edges of the sheet, the ends of said celluloid strips abutting against the edges of said metal strips,

In witness whereof we affix our signatures.

HENRY GARNER. JAMES PARKER GARNER. 

